virtio-net: Expose MAX_VLAN

vhost-vdpa shadowed CVQ needs to know the maximum number of vlans supported by the virtio-net device, so QEMU can restore the VLAN state in a migration. Co-developed-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Hawkins Jiawei <yin31149@gmail.com> Message-Id: <ca03403319c6405ea7c400836a572255bbc9ceba.1690106284.git.yin31149@gmail.com> Tested-by: Lei Yang <leiyang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
qemu · Oct 4, 2023 · e19751a · e19751a
1 parent 06b636a
commit e19751a
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
@@ -49,8 +49,6 @@
 
 #define VIRTIO_NET_VM_VERSION    11
 
-#define MAX_VLAN    (1 << 12)   /* Per 802.1Q definition */
-
 /* previously fixed value */
 #define VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE 256
 #define VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE 256

diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
@@ -38,6 +38,12 @@ OBJECT_DECLARE_SIMPLE_TYPE(VirtIONet, VIRTIO_NET)
 /* Maximum VIRTIO_NET_CTRL_MAC_TABLE_SET unicast + multicast entries. */
 #define MAC_TABLE_ENTRIES    64
 
+/*
+ * The maximum number of VLANs in the VLAN filter table
+ * added by VIRTIO_NET_CTRL_VLAN_ADD
+ */
+#define MAX_VLAN    (1 << 12)   /* Per 802.1Q definition */
+
 typedef struct virtio_net_conf
 {
     uint32_t txtimer;